Symptoms

Consider the following scenario:

  • You use a Single Sign-On (SSO) smart card to log on a Windows 7-based computer in a domain environment. Therefore, you are automatically signed in to all applications that support smart card authentication.

  • You successfully log on to a computer that is running Windows 7 by using a smart card.

  • You try to connect to a wireless network that requires authentication.

In this scenario, you are prompted to enter your personal identification number (PIN) unexpectedly.

Cause

This issue occurs because the Rstls.dll component in Windows 7 does not support the EmptyPinType feature.

Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running Windows 7 or Windows 7 Service Pack 1 (SP1).For more information about how to obtain a Windows 7 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 7 file information note

Important Windows 7 and Windows Server 2008 R2 updates are included in the same packages.

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    SR_Level

    Service branch

    6.1.760
    0.
    21xxx

    Windows 7

    RTM

    LDR

    6.1.760
    1.
    21xxx

    Windows 7

    SP1

    LDR

  • The MANIFEST files (.manifest) that are installed for each environment are listed separately in the "Additional file information for Windows 7" section. MANIFEST files and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Rastls.dll

6.1.7600.21011

372,736

19-Jul-2011

04:28

x86

Rastls.dll

6.1.7601.21773

372,736

19-Jul-2011

05:49

x86

For all supported x64-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Rastls.dll

6.1.7600.21011

424,448

19-Jul-2011

05:27

x64

Rastls.dll

6.1.7601.21773

424,448

19-Jul-2011

05:25

x64

Rastls.dll

6.1.7600.21011

372,736

19-Jul-2011

04:28

x86

Rastls.dll

6.1.7601.21773

372,736

19-Jul-2011

05:49

x86

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

Providers of smart cards can implement the EmptyPinType feature to provide a Single Sign-On experience. For more information about the EmptyPinType feature, visit the following Microsoft website:

Windows Smart Card Minidriver SpecificationFor more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows 7

Additional files for all supported x86-based versions of Windows 7

File name

X86_1a4de477b1c9469659fac748eb9ba5b8_31bf3856ad364e35_6.1.7600.21011_none_40f5646cb72d5bbe.manifest

File version

Not Applicable

File size

694

Date (UTC)

19-Jul-2011

Time (UTC)

10:39

Platform

Not Applicable

File name

X86_8443b22b09d3bea98c12d2c9119de85c_31bf3856ad364e35_6.1.7601.21773_none_18ca6be01a594eb4.manifest

File version

Not Applicable

File size

694

Date (UTC)

19-Jul-2011

Time (UTC)

10:39

Platform

Not Applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21011_none_6d0caec8ca60119a.manifest

File version

Not Applicable

File size

4,741

Date (UTC)

19-Jul-2011

Time (UTC)

05:00

Platform

Not Applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.21773_none_6eb454b8c7b52498.manifest

File version

Not Applicable

File size

4,741

Date (UTC)

19-Jul-2011

Time (UTC)

06:26

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows 7

File name

Amd64_264d20f4abfb9bf7993bb7fd2490c154_31bf3856ad364e35_6.1.7601.21773_none_8c8118949b9ef581.manifest

File version

Not Applicable

File size

698

Date (UTC)

19-Jul-2011

Time (UTC)

10:39

Platform

Not Applicable

File name

Amd64_746da7ecce83803e46e53a8b312a6461_31bf3856ad364e35_6.1.7601.21773_none_39e087d605c5c904.manifest

File version

Not Applicable

File size

1,036

Date (UTC)

19-Jul-2011

Time (UTC)

10:39

Platform

Not Applicable

File name

Amd64_a375b37ab4ecfb94f59461071ffc314c_31bf3856ad364e35_6.1.7600.21011_none_df8648aaf4a99743.manifest

File version

Not Applicable

File size

698

Date (UTC)

19-Jul-2011

Time (UTC)

10:39

Platform

Not Applicable

File name

Amd64_e0a505e55279ae62c7d3c378240633d1_31bf3856ad364e35_6.1.7600.21011_none_ac4c70a544257ec8.manifest

File version

Not Applicable

File size

1,036

Date (UTC)

19-Jul-2011

Time (UTC)

10:39

Platform

Not Applicable

File name

Amd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21011_none_c92b4a4c82bd82d0.manifest

File version

Not Applicable

File size

4,745

Date (UTC)

19-Jul-2011

Time (UTC)

06:02

Platform

Not Applicable

File name

Amd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.21773_none_cad2f03c801295ce.manifest

File version

Not Applicable

File size

4,745

Date (UTC)

19-Jul-2011

Time (UTC)

07:01

Platform

Not Applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21011_none_6d0caec8ca60119a.manifest

File version

Not Applicable

File size

4,741

Date (UTC)

19-Jul-2011

Time (UTC)

05:00

Platform

Not Applicable

File name

X86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.21773_none_6eb454b8c7b52498.manifest

File version

Not Applicable

File size

4,741

Date (UTC)

19-Jul-2011

Time (UTC)

06:26

Platform

Not Applicable

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